Heel-attaching machine



April 29,l 1930. F. H. PocHlN aHEEL A'ITGHING4 MAGHIN Filed Oct. l5, 1927 2 Sheets-Sheet 1 bylaw kw ,Umm/m April 29, 1930. F, H POCHIN 1,756,134

HEEL ATTAGHING MACHINE Filed Oct'. l5, 1927 2 Sheets-Sheet 2 l wp PD E! y?, l I.v

NM 50l 51 5S v/M/fA/m? FrunK H Pochn Patented Apr. 29, 1930 11N-tiren STATES PATENT orifice:-

FR'NK HOWABD POCHIN, OF'LEIGESTER, ENGLAND HEEL-ATTACHING/ MACHINE Application led October 15, 192,7. Serial No. 226,478.

Y 100i the shoe 'supporting and naily driving means; F 3 is a see-tional view Vot means for engaging therearV of a heel; and .F1g. 4 is a detail to be referred to.

, lnqsaid drawings, theinumerall 4 indicates 15" a' vsuitably shapedI frame which is provided in its base with a vert-ical bearingfto recelve slivdalblythereina sleeve 5 -that carries the shoe supporting and nail ydriving means.

Said sleeve'is rprovided with Aan extension .20 6, 'having'a rack` 7. Ingear with said rack is'l a pinion 8 mounted on a spindle which is adapted to be rotated in either direction (thereby `raisingl or lowering the sleeve 5') by a hand lever 10.

:25 rEhesleeve 5 is provided with a recess or socket into whichthelower end 45101l a rod*V 12is'p-laced.l 'Said-rod has Van annular-shoulder13'on'W-hichafspring 14 is supported. A shoesupport 16 yis-provided that has a depending Atubular extension 11 in which the rod `l2'and spring 14: arey slidably received; Said tubular extensiony is counterbored to provide an annular shoulder 17 vagainst 'Bhe drivers v18, platesf21' ,and 23, and thel Y upper end ot the rod A121, are all contained or 45' received, andadaptedgfor sliding movement,

the support16.

W'henlfitting thev above described partstogether, the drivers 1,8V (having enlarged lower ends) are `inserted in apertures in Vthe plate 21 "and theirupperends areenteredinto aperwhichitheA upper .end ofthe spring engages.V

in a 1recess9 provided in the -upper part of tures 1'5 in the support 16. The drivers and platev l2,1 are then raised to permit insertion ot the presser plate 23 into 4the recess 9 with one edge (which is preferably straight) against the vertical wall 39 of said recess. The part 37 of lthe rod l2 is then passed through a central aperture in the plate 23, and screwedy into a threaded aperture-in the plateV by rot-ating saidy rod' by a tommy plalced ina holeill in the lower end of said IO "The drivers are thus neatly containedin the recess 9 and securely clamped'to the'rod l2'pand lare adaptedl for lvertical movement relative to thesupport 16. Such movement is llimitednby the contactingV of the `upper surtace of the plate y21 with Athe 'upperwall 2O or" they recess 9.

The dimensions of 'the various Vparts may be such Vast-o permit thedrivers to movepuntil 70 their upper ends project onesixteenthof aninch (more or less) above the surface of thev sup-port 16, so that the yI iails will beY driven one-sixteenth of an inch"belo.wtlie surface'o the 4insole inside the shoe. 5

lt Lis sometimes desirable, jhowever, to drive the-nails' flush with the surface ofthe insole, and in order to provide for a simple and speedy adiustnient whereby this result may be attained, 'we-provide a grubserew 26. By serewing this 'down until it projects-one-siX- teenth lofV an Vinch into the recess 9 Athe movement lofthe drivers '18 willbe further limi-ted ter the purpose stated.

li desired, the grubscrexv 26 may be screwerl-#down 1'to project more than one-sixteenth of animeh finto Jthe recess, so that the nails lwill "belett standing yup la little above the surf'liaee et the insole.

Rotation fot the Ashoe suppertingy and -nail driving' means-lis lprevented bya sorew'24 that engageslin a guidewa-y -orf slot 125 ,the tubular exten-sion 11 -of the support 16.

The-heel holding or `clamping means coinprise two members, one to engage the tread 9' surface, and the Aother 'to engage the rear, oftheheel.

The tread-'surface engaging member or anvil consists `of va plate 30, -pivotallysupt. l. L portedvona block 131 which ls'carried on a sort of collar '32. A stop screw 33 is provided in said collar against which the plate Y 30 is held by a spring 35. A very simple and quick adjustment of the angle ofthe plate with respect to the horizontal may be effected by adjusting the stop screw 33. This adjustment is necessary to ensure that the plateV 30 will lcorrectly engage the tread surfaces of heels differing in pitch, i. e., heels the` duced at 34 and provided at that part with Va left-hand screw 'threadwhich is screwed Y- intoan internal left-handed thread in a sleeve 38,n vThe sleeve 38 is'also provided with an externalright-handedv thread whereby it is screwed into the machine frame 4, and with afhan'd Wheel 40.` Rotation of the spindle 3611s preventedfby aser w 4t2-thatengages in avertical slot or guideway 43 in said spindle.

. meansl above described are simple in construction and pro-vide fora very rapid yadjustment of the vertical position of the plate 30, for, on rotating the sleeve 38 by means ofthe hand wheel 40, the spindle 36 n ell will move a ydistance equal `to the sum of the pitches., "of .the right-hand and left-hand threads respectively for each complete rotationofsaid sleeve'. Further, by reason of the multiplied movement of the spindle 36 as above described, threads may be used havin'gva sufficiently small pitchto prevent :accidental displacement of the parts by pressure oftliefheel against the plate 30. A. rapidad- -justment is attainable by means of a single threadof large pitch, butvmeans to prevent its accidental rotation must then be provided,

with `consequential complication of parts, in-

creased cost, and lloss of Ytime in setting said means. *Y f Y j 1 In orderto prevent the heel from slipping backwards olf the shoe, I provide a member to engage the rear face ofthe heel. Said member consists of Ya spindle 50 .which may be provided with apad 51 on its lower, heelengaging, end.v If desired, the lower end of sai'dspindlejmaybe flat (seel F ig. 4), anda pieceof rubber-58' placed thereon and held .in position by a strip of leather 51. Y

Said .spindle is carried and adjusted by means similar inconstructionto'those def scribed with-referenceto the spindle 36. That is to say, the spindle v() provided with a.

slot ror Aguideway 56 engaged by a screw 55 whereby it is preventedv from rotating and y is reducedat 52 and provided at that part with a left handed thread whereby it is screwed into a hollow sleeve 53. Said sleeve is provided with an external right-handed thread'wherebyit is screwed into a screwthreaded part of the machine frame, and it is also provided with a hand wheel 54. By

without fear of its slipping back when the heel'pressesY firmly against the-pad due to ,the upward movement of the heel when the handle is pulled forward.

When a heel is to bey attached to acshoe, the operator placesnailsin the apertures 15.

He then places the shoe upside down over the support 16, and the heel in position thereon. :The plate is adjusted according to the height and pitch of heel and the spindle v also will be-adjusted to suit theheel. The

support 16 may, if desired, be raised slowly until the heel contacts with the plate 30 and padl 51 inorder to ascertain if the adjustments have been made. correctly..

' lf abatch of shoes having heels of the same shape, height, andpitch, are to be operated on, the adjustments made for the first shoe will of course be suitable, for all the `shoes in the batchf Y Having-positioned the shoe and heel and made the adjustments referred to, the operator gra-sps the hand lever 10, and moves this smartly towards him, thereby raising the sleeve 5, through pinion 8,'.and consequently also the shoe support and-nail driving means carried thereby. When the tread surface of the'heel contacts with the plate 30, theheel, shoe, and support 16, will jbe arrestedfwhilst the rod-12 andv drivers 18 continue to move ,thereby drivingthefnails. The extent to which the rod and drivers,V move will, as already stated bje determined bythe upper surface-of the plate 21 contacting with either the surface 2O or the screw-26. 7 Y

v Since the rod 12 was moved upwards relatively to the support 16, the spring 14 is compressed and therefore will tend in the early stageV of the backward movement of the hand leverl() to rotate the'pinion8 and thereby servegto, or assist in returning the said lever and the partsl controlled by it to their normal positions. This tendency will be augmented by the gravity {of-the shoe support and ynail driving means. When, therefore, the operator has finished nailing a heelto a sh0e,a very slight push sends the lever 10 backwards and returnsall theparts to their normal lowermost positions so that the shoe can immediately be removed and'another placed on'the support; l

` It will be observed that the rod 12 Vv(and parts carried thereby) can be liftedbodily out of the recess or socket in the sleeve 5. Bythis means provision is made` for rapid adaptation of a single apparatus for securing heels -to ladies andv mens shoes which of course vary considerably in dimensions; for if two rods 12 are provided-one carrying shoe supporting and nailing means Vvfor mens shoes, and the other carrying similar parts for operation on ladies shoes-.these may be rapidlyinterchanged according to thework Y ing nail-receiving apertures, an actuating rod slidable vertically in said member, a driver t plate carried by said rod and operating in said recess, nail drivers having heads at their lower ends resting against said driver plate, a clamping plate screw-threaded to the actuf ating rod and clamping the drivers to said driver plate, said drivers being of such a length that when the driver plate is at the lower limit of its movement the upper ends of the drivers are received in said apertures,

and a grub screw in the apertured portion of said member which by its adjustment operates Yto limit-the driving movement of the nail "if driver.

FRANK HOWARD PooHiN. 

